The methods of communication used during the war were primitive by today's standards.
按今天的标准，大战时期使用的通讯方法非常简陋。
《牛津词典》
2
In the 1940s, ATC centres could and did take advantage of the newly developed radar and improved radio communication brought about by the Second World War, but the system remained rudimentary.
Aim at the characteristic of test command control, designing methods of the communication protocol, control software and communications software war was studied.